Margin Account

Investment Vehicles High Relevance

A brokerage account that allows investors to borrow money from their broker-dealer to purchase securities, with the purchased securities serving as collateral. Federal Reserve Regulation T requires 50% initial margin (the investor must deposit at least 50% of the purchase price), while FINRA requires 25% minimum maintenance margin (the account equity must not fall below 25% of the current market value). Interest is charged on the borrowed amount, and investors face the risk of margin calls if account equity falls below maintenance requirements.

Example

An investor with $10,000 cash wants to buy stock worth $20,000. In a margin account, they can borrow the additional $10,000 from their broker (50% initial margin). If the stock value drops to $16,000, the investor now has $6,000 equity ($16,000 - $10,000 loan = $6,000, which is 37.5% equity). If the stock drops further to $12,000, equity falls to $2,000 ($12,000 - $10,000 = $2,000, or 16.7% equity), which is below the 25% minimum maintenance margin, triggering a margin call requiring the investor to deposit additional funds immediately.

Common Confusion

Students often confuse initial margin (50% required at purchase under Reg T) with maintenance margin (25% minimum required ongoing under FINRA). Another common mistake is thinking margin accounts provide "free" leverage without risk. in reality, margin accounts amplify both gains AND losses, charge interest on borrowed amounts, and can result in forced liquidation if a margin call is not met. Margin is suitable only for sophisticated investors who understand leverage risk.

How This Is Tested

  • Calculating initial margin requirements based on Regulation T (50% of purchase price)
  • Determining when a margin call occurs based on maintenance margin thresholds (typically 25-30%)
  • Evaluating whether margin accounts are suitable for specific client profiles (risk tolerance, investment experience, financial situation)
  • Understanding the risks of leverage, including amplified losses and forced liquidation
  • Distinguishing between cash accounts (no borrowing) and margin accounts (borrowing allowed)

Regulatory Limits

Description Limit Notes
Regulation T initial margin requirement 50% of purchase price Federal Reserve regulation requiring investors to deposit at least 50% of the purchase price in cash or eligible securities
FINRA minimum maintenance margin 25% of current market value Account equity must not fall below 25% of the current market value of securities. Firms often set higher maintenance requirements (30-40%)
Typical firm maintenance margin 30-40% of current market value Most broker-dealers set maintenance margins higher than the 25% regulatory minimum
Margin interest Varies by broker (typically 5-12% annually) Interest charged on borrowed amounts, calculated daily and compounded
Margin call consequences Immediate deposit required or forced liquidation If account equity falls below maintenance margin, the broker can liquidate securities without prior client approval

Example Exam Questions

Test your understanding with these practice questions. Select an answer to see the explanation.

Question 1

Sarah, a 28-year-old technology professional with 3 years of investing experience, has $25,000 to invest and maintains a stable income with minimal debt. She wants to open a margin account to "maximize returns" by purchasing $50,000 worth of a volatile biotech stock using maximum leverage. Her stated risk tolerance is "moderate" and her investment timeline is 2-3 years for a down payment on a house. As her IAR, what is the MOST appropriate course of action?

Question 2

What is the minimum initial margin requirement under Federal Reserve Regulation T for purchasing securities in a margin account?

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Question 3

An investor purchases $40,000 worth of stock in a margin account, depositing the required 50% initial margin. The stock value subsequently declines to $30,000. What is the current equity percentage in the account, and has a margin call been triggered (assuming 25% minimum maintenance margin)?

Question 4

All of the following statements about margin accounts are accurate EXCEPT

Question 5

An investor opens a margin account and purchases $60,000 worth of securities using maximum allowable leverage. The securities subsequently decline in value to $42,000. Which of the following statements are accurate?

1. The investor initially deposited $30,000 to meet Regulation T requirements
2. The current equity in the account is $12,000
3. A margin call has been triggered assuming 25% minimum maintenance margin
4. The investor can lose more than their initial $30,000 investment

💡 Memory Aid

Margin account is like buying a house with a 50% down payment (Regulation T initial margin). you get leverage to control more assets, but if the value drops below 25-30% equity (maintenance margin), the bank (broker) calls demanding more money NOW (margin call) or they sell your assets. Remember: margin = magnified gains AND losses, plus you pay interest on the loan.

Related Concepts

This term is part of this cluster:

Where This Appears on the Exam

This term is tested in the following Series 65 exam topics: